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Thread: Evacuations In California

  1. #31
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    Was there some sort of copper mine around there at some point? The rock, to me, appears to have copper in it, based on the color, and I am thinking a mine, under the spillway, collapsing, could have been an initial cause.

  2. #32
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    Well, obviously something collapsed.

    We were evacuated here again for 2 days and a night, then they cut way back on the dam releases, so the river has gone down to a nice spring level. We're good now until the snow starts melting, which hopefully will be a slow melt.

  3. #33
    Senior Member jp1's Avatar
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    I think it was more just a matter that once the concrete failed and a hole developed water got under and washed away a whole lot of dirt.

  4. #34
    Senior Member CathyA's Avatar
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    Hmmm.....did they build the spillway on all the huge boulders with the spaces inbetween, or had they filled those spaces/holes in with something and the "filler" got washed away?

  5. #35
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    Water is incredibly powerful and if any got underneath any type of fill, it would wash it away. IF Dad was still alive, he would have the answer. He was a civil engineer and lived down from the dam. He said at least 10 years ago that there would be problems.

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